Daftar Isi:
  • Characterization  of  Surface  Active  Shell  Charcoal  Nyamplung  Seeds (Calophyllum  inophyllum  Linn). Chemical and physical activation of nyamplung shell with 0%, 5%, and 10% H3PO4 for 60 and 120 minutes has been carried out to  prepare  activated  charcoal.  The  purpose  of this  experiment  was  to  look  into  the  characteristic  of  nyamplung shell activated  charcoal  surface.  Nyamplung  shell  was  carbonized  into charcoal,  then  activated  by  immersion  in  H3PO4 solution  using  0%, 5%  and  10%,  for  24  hours,  and  heated  in  retort at  two temperatures  (700 and 800 oC) and two duration (60 and 120 minutes). The material were characterized by  fourier transform infra red (FTIR), scaning electron microscope (SEM) and X-ray diffraction (XRD). The FTIR spectrum show that  activated charcoal has OH, C-H, C-O and  C=C bonds. The  bonds  of  OH  and  C-O  indicated  that  the  treatment  was produced  polar  activated  charcoal. The porous  texture  was  influenced by  H3PO4  concentration.  The  porous  with  dimension  <5 μ being predominant at low concentration of H3PO4 (0% and 5%) but larger amount of H3PO4 (10%) produced wide pore with dimension >5 μ.  Keywords: activated charcoal, FTIR, nyamplung shell, SEM, XRD